Nicotiana tabacum L.

Anther culture is an effective breeding method for improving desirable traits, since it allows fast achievement of genetically homozygous lines. The present studies were carried out to evaluate the response of flue-cured tobacco anthers for high frequency pollen embryo induction in different culture media, and the effects of colchicine treatment on tobacco chromosome doubling. The results showed that different media caused significant changes in pollen embryo induction, in which the most obvious change was found in B medium with induction rates of 23.28%, 26.64%, and 28.

9p tudichquannguyet 29-11-2021 5 1   Download

Đề tài nghiên cứu tạo nguyên liệu biến nạp từ cây thuốc lá giống K326; nghiên cứu lây nhiễm A. tumefaciens mang vector chuyển gen vào mảnh lá thuốc lá. Tái sinh in vitro, chọn lọc và tạo các dòng cây thuốc lá chuyển gen; phân tích sự có mặt của gen chuyển trong các dòng cây chuyển gen ở thế hệ T0 bằng kỹ thuật PCR.

62p beloveinhouse03 22-08-2021 21 2   Download

Weather change in high-altitude areas subjects mature tobacco (Nicotiana tabacum L.) to cold stress, which damages tobacco leaf yield and quality. A brupt diurnal temperature differences (the daily temperature dropping more than 20 °C) along with rainfall in tobacco-growing areas at an altitude above 2450 m, caused cold stress to field-grown tobacco.

15p vijichea2711 28-05-2021 10 1   Download

Lateral branches vigorously proliferate in tobacco after the topping of the inforescence portions of stems for the maturation of the leaves to be harvested. Therefore, tobacco varieties with inhibited lateral shoot formation are highly desired by tobacco farmers.

12p vijichea2711 28-05-2021 6 1   Download

Drought stress is an environmental factor that limits plant growth and reproduction. Little research has been conducted to investigate the MLP gene in tobacco. Here, NtMLP423 was isolated and identified, and its role in drought stress was studied.

14p vijichea2711 28-05-2021 6 1   Download

‘Regal Splendour’ (Hosta variety) is famous for its multi-color leaves, which are useful resources for exploring chloroplast development and color changes. The expressions of chlorophyll biosynthesis-related genes (HrHEMA, HrPOR and HrCAO) in Hosta have been demonstrated to be associated with leaf color.

14p vijichea2711 28-05-2021 11 1   Download

Tobacco seed oil could be used as an appropriate feedstock for biodiesel production. However, the high linoleic acid content of tobacco seed oil makes it susceptible to oxidation. Altering the fatty acid profile by increasing the content of oleic acid could improve the properties of biodiesel produced from tobacco seed oil.

12p vijichea2711 28-05-2021 12 1   Download

At present, the distinctness, uniformity, and stability (DUS) testing of flue-cured tobacco (Nicotiana tabacum L.) depends on field morphological identification, which is problematic in that it is labor intensive, timeconsuming, and susceptible to environmental impacts.

10p vijichea2711 28-05-2021 12 1   Download

The present investigation was carried out at ZAHRS, UAHS, Shivamogga during 2016- 2017 Kharif season to study the genetic variability, heritability and genetic advance, in F3 generation of FCV (Flue Cured Virginia) tobacco cross, TB-70 x TB-102. The mean and variance in sixteen quantitative characters in F3 generation of the cross TB-70 x TB-102 indicated wide variability among the families for all the traits viz.

5p nguaconbaynhay6 23-06-2020 13 1   Download

The experiment was carried out at ZAHRS, UAHS, Shivamogga during 2016-2017 Kharif to study the character association and path analysis in respect of cured leaf yield and its contributing traits in F3 generation of FCV (Flue Cured Virginia) tobacco cross TB-70 x TB-102, The component characters viz., green leaf yield, top grade equivalent, stem girth, number of leaves per plant, leaf length, leaf area per plant, plant height and leaf breadth exhibited significant positive correlation with each other and also with cured leaf yield.

6p angicungduoc5 14-06-2020 13 0   Download

The investigation was conducted to assess the heterosis in respect to leaf yield and its component characters through 6 x 6 diallel mating design involving thirty hybrids and six parents in FCV tobacco during kharif 2016 at ZAHRS (Zonal Agricultural and Horticultural Research Station), College of Agriculture Shivamogga.

8p cothumenhmong5 17-05-2020 4 0   Download

We have previously reported that the seed-specific overexpression of sunflower (Helianthus annuus L.) Heat Shock Factor A9 (HaHSFA9) enhanced seed longevity in transgenic tobacco (Nicotiana tabacum L.). In addition, the overexpression of HaHSFA9 in vegetative organs conferred tolerance to drastic levels of dehydration and oxidative stress.

12p viminato2711 22-05-2020 10 0   Download

Auxin was recognized as a secondary dormancy phytohormone, controlling seed dormancy and germination. However, the exogenous auxin-controlled seed dormancy and germination remain unclear in physiological process and gene network.

15p vihashirama2711 21-05-2020 16 1   Download

Plant TRANSPARENT TESTA GLABRA (TTG) proteins regulate various developmental activities via the auxin signaling pathway. Recently, we elucidated the developmental role of tobacco (Nicotiana tabacum L.) NtTTG2 in association with 12 genes that putatively encode AUXIN RESPONSIVE FACTOR (ARF) proteins, including NtARF8, NtARF17, and NtARF19.

17p vihashirama2711 21-05-2020 13 1   Download

Nicotiana tabacum is an important economic crop. Topping, a common agricultural practice employed with flue-cured tobacco, is designed to increase leaf nicotine contents by increasing nicotine biosynthesis in roots.

15p viharuno2711 21-04-2020 10 1   Download

The research was conducted to assess the combining ability in respect to leaf yield and its component characters through 6 x 6 diallel mating design involving thirty hybrids and six parents in FCV tobacco during kharif 2016 at ZAHRS (Zonal Agricultural and Horticultural Research Station), College of Agriculture Shivamogga. Combining ability analysis was carried out for leaf yield and its components in FCV tobacco. Both General combining ability (GCA) and Specific combining ability (SCA) variances were highly significant for almost all the characters.

8p cothumenhmong1 11-12-2019 10 0   Download

A field experiment was undertaken at Regional Agriculture Research Station, Nandyal, Andhra Pradesh during 2017-18 on vertisols under rainfed condition to find out the suitable method of planting to avoid water logging for higher cured leaf yield in bidi tobacco (Nicotiana tabacum L.). The treatments consisted of two planting methods (Ridge method and flat bed method) as one factor and four planting geometry (60 cm x 50 cm, 60 cm x 75 cm, 75 cm x 50 cm and 75 cm x 75 cm) as another factor in factorial randomized block design and replicated thrice.

7p chauchaungayxua1 04-12-2019 13 0   Download

Bài viết nghiên cứu nhằm tạo ra giống cây thuốc lá có tính kháng khuẩn, giảm sử dụng nông dược, nâng cao năng suất cây trồng, gien độc tố bở Bt của vi khuẩn Bacillus thuringiensis đã được chuyển vào cây thuốc lá nhờ vi khuẩn Agrobacterium Tumefaciens.

6p nguaconbaynhay 22-10-2019 30 0   Download

This study was carried out to determine the effects of heavy metals (Ni, Fe, Pb, Co, Cd, Hg, Al, Zn and Cu) on pollen germination and pollen tube length in the tobacco plant (Nicotiana tabacum L.) cv. Karaba¤lar. The results showed that enhanced concentrations of heavy metals, except Fe, decreased the pollen germination rates and the pollen tube lengths.

5p vitamix 19-02-2019 29 0   Download

In order to obtain androgenic doubled haploids of tobacco (Nicotiana tabacum cv. Karaba¤lar 6265) colchicine was applied at 3 different stages of anther culture. The main advantage of this method is that treated plantlets can be transplanted directly into pots in order to grow androgenic plants.

7p vitamix 15-02-2019 17 1   Download